Features: Compatibility: This temperature sensor is a replacement part for spa temperature sensors and is designed for use with hot tubs. It is a reliable hot tub heater sensor engineered to ensure your spa system maintains the desired temperature. Compatible with the following models: - 2007+ J-270, J-280, J-355, J-365, and J-375 - 2005+ J-210, J-220, and J-230, J-200 LED models - 2005–2007 J-325 - 2004+ J-335, J-345 - 2003–2005 Del Sol models - 2002–2003 J-320, J-330, J-340 - J-300 LCD Series (2002+) - J-350, J-360, J-380 (2002–2003) - J-355, J-365, J-375, J-385 (2004–2006) - All J-400 models (2006–2009) Also compatible with: - 880 Systems (2005+) - 850 Systems (1997–2005) - 400, 600, 600-S, 750, 800, and 850 Systems - Suncoast (1992) - Suntub SVDV Systems (496–498) - 850 Systems (1997+) Replaces part numbers: 6600-138, 6600-105, and is interchangeable with 6600-182 (stainless steel) with box end connectors. For inground spas without a skirt, refer to model 6600-169. Function: This hot tub temperature sensor helps resolve common error codes such as OH or ICE on Sundance spa control panels. Installation: Easy to install. Remove the old sensor and tape the new sensor’s wire to the old one, then pull it through to the control board. Specifications: - Part Name: Temperature Sensor - Part Number: 6600-166 - Material: Non-woven fabric - Color: Black Package Contents: 1 x Temperature Sensor Note: The package includes only the temperature sensor. Other items are not included. Due to lighting and display differences, the actual color may vary slightly from the image. Allowable measurement variation is +/- 1–3 cm.